Degradation and Reliability Evaluation for Passive RC Filters Based on Kirchhoff's Circuit Laws

Passive RC filters are usually required with stable performance and high reliability in order to perform well in their applications of signal processing, noise suppression, and frequency selection. However, current methods cannot construct the physical relationship between the performance degradation and reliability of filters and their components. To address this problem, we take passive low-pass RC filters as the research object and propose a degradation and reliability evaluation method based on Kirchhoff's circuit laws. Firstly, the performance modeling of passive RC filters is conducted based on Kirchhoff's circuit laws. Then, considering the degradation of filter components, including resistors and capacitors, the degradation model of passive RC filters is constructed. Next, combined with the function requirements of passive RC filters, the margin model is constructed, and finally, the reliability model is established. A practical case of passive RC filters is applied to illustrate the practicability and advantages of the proposed method.

Keywords: Passive low-pass RC filter, Degradation modeling, Reliability evaluation, Kirchhoff's circuit law, Performance.